Pack-board



April 30, 1935. L. AN 1,999,963

PACK BOARD Filed April 18, 1955 ORNEY I Patented Apr. 30, 1935 Albert f L. Frank, 7 Seattle, Wash; assignor to" Seattle Tent & Awning Company, a corporav tion of Washington Applicationhiaril18,1933, Serial No. 666,682

. 10Claims.

. This invention relates to fcollapsible' packboards, a primary object being theprovision'of a simplified, light weight, and especially efficient pack-board and particularly one in which, for storing or shipping the same collapsed, requires little space.

A further and particular object lies in the provision of improved means "affording more rapid assembly. 1 1 j A still further object, accommodating the packboard to efiicient use io'r transporting portable motors or the like used in forestry and other field services, is the provision of most advan-' tageous mechanism adapted for selective coupling or detachment from thepack-board and the motor for connecting thelatterto the pack board.

Further and more particularobj'ects and advantages, together with the foregoing, will become apparent in the'course of thefollowing detailed description and claims, the invention consisting inthe novel construction,- adaptation and combination of parts hereinafter'described' and claimed. I t

In the drawing:

Figure l is a front elevation of the preferred embodiment of theinvention, the flexible jacket and one side bar being broken away and shown in section; Fig. 2 isa vertical transverse section thereof; Fig. 3 is a fragmentary top plan View taken to an enlarged'scale and representing the motor-coupling mechanism attached, the motor being shown in dotted lines; Fig; 4 is a detail perspective of the frame construction; and Fig. 5 is a detail perspective of the motor-coupling bar shown in Fig. 3.

Reference being had thereto, the numerals 5,

6 indicate the upright side bars of a pack-board frame constructed in accord with the preferred embodiment of the present invention, saidside bars being adapted for introduction within a jacket such as l of canvas or other fabric or flexible; non-extensible material and spreadlaterally of one another therein to draw the jacket taut over the same. a

Said lateral action I obtain through the use of transversely extending vertically movable spreader m'ms 8, 9 introduced between the side bars to wedge the'same outwardly, the side bars being formed to provide, at the upper and lower portions It, of their respective inner surfaces, inwardly inclined planes which act conjunctively with vertical'grooves cut in the same for receiving the spreader arms. More especially, each opposite end of the spreader arms are formed with a projecting tongue M of a length approximately thedepth of the'grooves, said tongues as with:

adjacent end portions of thes'preader arms being inclined parallel tothe surface of the side bar upon which'the same tracks. 7

l5 indicates a bolt. received through vertically alignedapertures of the spreader arms] A wingnut i5 threaded on the lower end of the bolt forces the spreader arms into abutting engagement with shoulder portions terminating each groove at inner ends of "the same.

Over each side bar at the upper and lower extremity of the same, 'Iattach metalstraps 28;"

which are formed to present rearwardly projecting eye-forming loops 2!. For ordinary packinga ring, is received through" the 'eye'of these loops and serves, co-operati'velywith vertically-spaced pins 22 extending through openings therefor in the jacket, 'toreceive suitable rope or the like for cinching the pack on the board. Said metal" straps, however, are particularly designedto accommodate the attachment of a load-supporting cross-armlindicated by-25 which is provided at each .end with an extending plate ZG apertured as at-.2l.- The strap loop is'adapted to be in-- serted through the aperture 'anda' key 28 passed through the exposed eye of the loopto secure the attachedcross-arm against dislodgemen't.

An especially efficient manner of connecting the cross-arm with the-portable motorsuch as indicated by dotted lines in Fig. 3 comprises cleat elements 29 which act to engage over flanges provided-on thebedplate of the -motor. 'The flange provides a lug at its upper end against which the cleat elementabut's, the cross-arms being readily slid over. the flange fromthe lower end of the motor I represent in Fig. 2 a triangular flap 30 hav 1 ing its lower end sewed to the" jacket. The free end is or may be connected by rope (indicated by dotted lines) with the pins 22 at opposite sides of the pack-board to accommodate the reception of loose blankets or the like. When not in use, the flap maybe concealed within the jacket. 7

The pack-board is assembled by inserting the' side bars in the jacket and locating the pins 22' through openings therefor in the'jacket. The

spreader arms are introduced with the tongues sliding in respective grooves, being forced inwardly to the limits of their travel after which the bolt I5 is, inserted to clamp the arms. 7

I The invention is believed clear from the foregoing. The preferred showing, however, is illus-. trative only and I confinemyself only as limited by the scope of'the hereto annexed claims. 7

What I claim, iszof upright side bars'received in saidjacket and V presenting eyes projecting from outer faces. of the same adapted for reception through said jacket apertures, each of the inner face portions of said side bars at upper and lower ends of the same being provided with inwardly sloping grooves, arms supported between said sidebars and operative in the sloping grooves of the inner iaces thereof for spreading the side bars to draw the jacket taut over the side bars, and means comprising a rod having a head adapted to engage over the upperor" said spreader arms and a nut threaded on the lower end of said rod adapted to engage under the lower spreader arm for forcing the arms toward one another, said means serving to prevent retractive movement of the arms for] loops, and means engageable through the'eye of said loops for locking the cross-arm against dis- 7 lodgrrlent.

- 4. In a collapsiblepack-board, a flexible jacket, upright side bars received therein in laterally spaced dispositions, the inner face portions of each of said side bars being provided'with vertical grooves sloping inwardly from the upper and lower ends of the same, transversely extending spreader arms between said'side bars providing tongue elements arranged for slide reception insaid grooves for wedging the side bars outwardly to draw the jacket taut over the side bars, each of said tongue elements being inclined parallel with the plane of the respective groove,

and means for securing said spreadenarms against dislod'gment, e v 5. In a collapsiblepack-board, a jacket, upright laterally spaced side bars received in said jacket for extending the jacket, the inner face portions of each of said side bars at upper and lower ends of the same being inclined from the vertical oppositionally of the companion side bar, transversely extending spreader arms received between said side bars for. sliding movement over the in- V clined surfaces to wedge the side bars outwardly in drawing the jacket taut over the side bars, and means for securing the spreader arms against dislodgment.

6. A pack-board providing a collapsible frame comprising a pair of laterally spaced upright side bars, a pair of transversely-extending wedge arms received between said side bars and movable longitudinally as respects the side barsrfor spreading the latter outwardly from one another, a jacket encasing the side bars to confine the spreading action of the wedge arms, and means for securing'the wedge arms against dislodgment.

7. A pack-board comprising a collapsible frame consisting in a pair of laterally movable side bars, longitudinally-movable arms received between said side bars affording said lateral movement, and a jacket encasing the side bars'and confining the same in opposition to the lateral movement of the side bars. a

8, A' pack-board comprising a collapsible frame consisting in a'pair of laterally movable side bars, means received between said side bars for movement longitudinally as respects the side bars for wedging'the side bars laterally from one another, and means arranged in opposition to the spreading action of said wedge means for confining the side bar movement.

9. Apack-board comprising a collapsible frame consisting in-a pair of laterally movable side bars, means between said sidebarsmovable longitudinally with respect thereto for imparting transverse pressure uponthe side bars to spread the side bars laterally, and means for limiting said lateral movement.

7 10, In ap'ack-board structure including a flexible jacket and side bars received therein in laterally spaced-apart dispositions, said side bars being'adapted to draw the jacket taut responsive l to movement of the side bars laterally from one another, means provided at the two opposite ends of the pack-board arranged for movement toward one another for spreading the side bars laterally.

' ALBERT L. FRANK. 

